Impact of a Variable Tungsten Pollution on the Elemental Uptake of Two Plant Species

Khadija Semhi, René Boutin, Sivakumar Nallusamy, Walid Al Busaidi, Abdallah Al Hamdi, Khamis Al Dhafri, Ahmed Al Busaidi

Research output: Contribution to journalArticle

Abstract

A radish and a grass species were grown in identical substrates either unpolluted or polluted by tungsten (W) at 1, 5, and 10 μg/g levels of watering solutions during 1 month under controlled laboratory conditions. Initially, at 4.1 μg/g, the W content in grass leaves reached 16 μg/g at the highest rate of W supply to the substrate. For radish, the content of W reached 22 and 29 μg/g in the leaves and roots, respectively. The overall W pollution increased significantly the mobility of major elements from substrate to grass leaves, especially at the 5 μg/g pollution level, whereas the W impact on radish leaves resulted in an increase of most contents, only Mn remaining unaffected. The roots from polluted radishes were enriched in Si by 21% and Al by 42% at low pollution, and in Si by 15% at high supply, whereas the uptake of the other elements remained unchanged. It looks like the W pollution at the levels chosen does not impact the transfer of the major and trace elements from roots to leaves of Raphanus sativus. Alternatively, metallic trace elements (Ba, Ni, Cr, Zn, W, Co) of the Raphanus sativus and Chloris gayana leaves outline similar content changes depending on the amount of W pollution. The total rare-earth element contents of the leaves of Raphanus sativus grown in the polluted substrates are lower than those of the leaves from unpolluted substrate. Their normalization in the leaves and roots of Raphanus sativus from the polluted substrates to those of the radish from non-polluted substrate provides flat patterns for both with a positive Eu anomaly for leaves, as for those of the grass and a negative Gd anomaly for roots. Also, addition of soluble W to the substrates induced an increase in the bacterial activity of the soil.

Original languageEnglish
Article number294
JournalWater, Air, and Soil Pollution
Volume229
Issue number9
DOIs
Publication statusPublished - Sep 1 2018

Fingerprint

Tungsten
tungsten
Pollution
pollution
Substrates
substrate
grass
Trace Elements
Trace elements
plant species
trace element
anomaly
Rare earth elements
microbial activity
Soils
rare earth element

Keywords

  • Fractionation
  • Leaves and roots
  • Major-
  • Rare-earth elemental uptake
  • Trace-
  • Tungsten

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Ecological Modelling
  • Water Science and Technology
  • Pollution

Cite this

Impact of a Variable Tungsten Pollution on the Elemental Uptake of Two Plant Species. / Semhi, Khadija; Boutin, René; Nallusamy, Sivakumar; Al Busaidi, Walid; Al Hamdi, Abdallah; Al Dhafri, Khamis; Al Busaidi, Ahmed.

In: Water, Air, and Soil Pollution, Vol. 229, No. 9, 294, 01.09.2018.

Research output: Contribution to journalArticle

Semhi, Khadija ; Boutin, René ; Nallusamy, Sivakumar ; Al Busaidi, Walid ; Al Hamdi, Abdallah ; Al Dhafri, Khamis ; Al Busaidi, Ahmed. / Impact of a Variable Tungsten Pollution on the Elemental Uptake of Two Plant Species. In: Water, Air, and Soil Pollution. 2018 ; Vol. 229, No. 9.
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